why is my Honda Pilot YF3 (2016-2022) engine light on after getting gas?

Solution

1. Preparation

• Gather tools and materials: OBD-II scanner, socket set, torque wrench, fuel pressure gauge, replacement gas cap (if necessary).
• Ensure the vehicle is parked on a level surface and the engine is off.

2. OBD-II Scan

• Connect the OBD-II scanner to the vehicle's diagnostic port.
• Turn the ignition to the "ON" position without starting the engine.
• Record any trouble codes that appear and write them down for reference.

3. Gas Cap Inspection

• Remove the gas cap and inspect the rubber seal for cracks or wear.
• If damaged, replace the gas cap with a new one, ensuring it is the correct part for the Honda Pilot YF3.
• Reinstall the gas cap and ensure it clicks into place.

4. Fuel Filler Neck Inspection

• Visually inspect the fuel filler neck for cracks or signs of corrosion.
• If damage is found, replace the fuel filler neck assembly.

5. EVAP System Inspection

• Locate the charcoal canister and purge valve; visually inspect for physical damage or disconnections.
• Test the purge valve's operation by applying vacuum and checking for leaks.
• If the purge valve is faulty, replace it according to the manufacturer's specifications.

6. Fuel Pressure Testing

• Connect the fuel pressure gauge to the fuel rail following the manufacturer's instructions.
• Start the engine and check that the pressure is within the recommended range.
• If pressure is low, inspect the fuel pump and fuel filter for blockages or failure.